MAPS have been released showing how the risk of chalk mines has diminished in parts of Hatfield – and what areas remain under threat. As reported in today's Welwyn & Hatfield Times, families living in many areas of the town blighted by possible chalk mines

MAPS have been released showing how the risk of chalk mines has diminished in parts of Hatfield - and what areas remain under threat.

As reported in today's Welwyn & Hatfield Times, families living in many areas of the town blighted by possible chalk mines are breathing a sigh of relief this week.

Investigations by Welwyn Hatfield Council have revealed the threat is not as great as was first feared.

But in a small number of areas, including around the University of Hertfordshire's College Lane Campus, the risk remains.

These areas will now be targeted for more extensive investigations.

Back in 2007, 25 areas dotted around Hatfield were identified as possible chalk mining locations.

This followed the discovery of mines in Briars Lane which led to extensive remedial work, including filling in tunnels, costing millions of pounds.

But following months of geotechnical research the number of at risk sites has dropped to 13.

You can see the maps in detail by clicking on the links below. The old one shows the areas identified in 2007 as possible chalk mine locations. The new map shows the parts of Hatfield where the risk remains.

* For reaction to the story, buy today’s Welwyn & Hatfield Times.